In the US, according to my observations, the new "super" headlights have appeared on only a few cars, so they're not really too common on the roads I drive. Properly aimed they're distinctive due to their color, but I don't generally find them bothersome when met on the road.

The new bulbs, however, are available as replacements for older halogen lamps, and do show up on the road, nearly always misaligned so that one or the other of the headlights is aimed directly into your face on "low beam" (dimmed) and shoots off into the sky when switched to the high beam.

People rely on the lamp housing remaining at or going back into exactly the original alignment when a new lamp is installed, and this almost never happens. With careful lamp replacement, the misalignment likely will be small, but a "sloppy" replacement can produce a really annoying (to others) setup.

The number of people who think they can just slip a new lamp in vastly exceeds the number who have even a foggy notion that the lamp alignment can be adjusted, and the number who might have some idea how to do it is infinitesimal. Even "professional" service shops commonly replace headlamps without bothering to verify or adjust the aiming after the new bulb is in. (And often the one that burned out was already mis-aimed.)

Although the brighter new bulbs make a misaligned oncoming headlight somewhat more effective in rendering you totally blind, even the old ones often suffer from the same problems of bad alignment.

Vehicle manufacturers perhaps contribute to the number of mis-aimed headlights by insisting that the aiming requires a "special tool" that's somewhat expensive. It's quicker and easier using the tool, and shops that don't have the one for your make/model may decline to attempt an alignment, based on manufacturers "specification" that the tool must be used. Older methods that don't rely on the tool(s) may be slightly less precise, but would certainly be sufficient to eliminate the worst offenders if used more widely - and more intelligently.

John